2-8 888-2408-002
WARNING: Disconnect primary power prior to servicing.
Installation & Initial Turn-On
f. To insert the wires into the Wego block, insert a screwdriver into the rectan-
gular slot above the wire hole then carefully lift. This will open the contact
inside the Wego block and the wire can be inserted. Be very careful not to let
the wire ends fray as the connectors are very close together and could cause a
short. The wire insulation should actually extend just inside the Wego block
hole.
g. The large orange ground wires, #46 and 60, coming from the top of each rec-
tifier assembly attach to ground studs at the top-front edge of the power sup-
ply compartment. It is located under the shelf which separates the power
supply from the PA compartment just above C3 and C4. See Figure 2-2.
h. Connect the safety ground wire to the stud on the front of the power supply
tray, just in front of A17TB1, See Figure 2-1.
i. Tighten the two hold down nuts located on the bottom front corners of the
power supply compartment. Re-install the front cover panel for the power
supply compartment.
2.5.5 Single Phase Power Supply Installation
Before installing the power supply check the primary ac tapping on the power
transformers as outlined below. Even if the transmitter was shipped with the power
supply installed, it would be a good idea to check the power supply tapping if
possible.
2.5.5.1 Power Transformer Tapping
The power transformers are tapped at the factory for the primary AC voltage
specified by the customer. This voltage should be documented in the factory test
data accompanying the transmitter and tagged at the ac contactor. However, the
voltage at the site and the transformer tapping should be verified by the installation
personnel. The input voltage and strapping chart is shown on the Overall System
Block Diagram along with the transformer schematic. Verification and/or re-tapping
will require opening the power supply access panel on the front of the transmitter
and rolling out the power supply if the transmitter was shipped with the power
supply already installed (this depends on where and how it is shipped).
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